CN108574272A - A kind of protection circuit and wireless power supply system applied to wireless power supply system - Google Patents
A kind of protection circuit and wireless power supply system applied to wireless power supply system Download PDFInfo
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- CN108574272A CN108574272A CN201710133805.7A CN201710133805A CN108574272A CN 108574272 A CN108574272 A CN 108574272A CN 201710133805 A CN201710133805 A CN 201710133805A CN 108574272 A CN108574272 A CN 108574272A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- H02J5/005—
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- H02J7/025—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of protection circuits and wireless power supply system applied to wireless power supply system; wireless power supply system includes transmitting terminal, transmitting terminal control unit, receiving terminal and receiving terminal control unit; receiving terminal is connected with load; protection circuit is set between receiving terminal and load; protection circuit includes voltage detection unit, vent unit and control signal output unit; voltage detection unit is connect with receiving terminal, vent unit and control signal output unit respectively; vent unit is also connect with receiving terminal, and control signal output unit is also connect with receiving terminal control unit.The present invention is provided with protection circuit between receiving terminal and load, is not damaged to load when load voltage is excessive when both ensure that charging, while cutting off transmitting terminal power supply and then protecting transmitting terminal circuit, improves the security performance of entire wireless power supply system.
Description
Technical field
The present invention relates to wireless power technical fields, more particularly to a kind of protection circuit applied to wireless power supply system
And wireless power supply system.
Background technology
With the development of science and technology wireless power technology has obtained greatly developing, wireless power supply system generally includes to emit
End, the transmitting terminal control unit of the switch for controlling transmitting terminal, electric current and power, receiving terminal and for controlling and receiving opening for end
The receiving terminal control unit of pass.Currently, the receiving terminal of powerful wireless power supply system mainly uses LC series resonant circuits
Mode carry out, the electric current of LC series resonant circuits being mainly characterized by circuit is very big.In addition, main logical in the prior art
The electric current and power for crossing control transmitting terminal control and receive the power and electric current at end, but when the load of receiving terminal is battery,
If the overcurrent protection damage of transmitting terminal or transmitting terminal and receiving terminal mismatch at all, to avoid damaging battery,
It needs to carry out power down process to battery, but directly cut off the battery to charge to damage transmitting terminal.
Therefore, how to provide it is a kind of solve above-mentioned technical problem scheme be that those skilled in the art need to solve at present
Problem.
Invention content
The object of the present invention is to provide a kind of protection circuits applied to wireless power supply system, are loaded when both ensure that charging
Load is not damaged when voltage is excessive, while cutting off transmitting terminal power supply and then protecting transmitting terminal circuit, improved entire
The security performance of wireless power supply system；It is a further object of the present invention to provide a kind of wireless power systems including above-mentioned protection circuit
System.
In order to solve the above technical problems, the present invention provides a kind of protection circuit applied to wireless power supply system, it is described
Wireless power supply system includes transmitting terminal, transmitting terminal control unit, receiving terminal and receiving terminal control unit, the receiving terminal and load
Connection, the protection circuit are set between the receiving terminal and the load, and the protection circuit includes：
Voltage detection unit, vent unit and control signal output unit, the voltage detection unit connect with described respectively
Receiving end, the vent unit and control signal output unit connection, the vent unit are also connect with the receiving terminal, institute
Control signal output unit is stated also to connect with the receiving terminal control unit；
The voltage detection unit is used to detect the output voltage of the receiving terminal, and when the output voltage is more than safety
It when threshold value, controls the vent unit and discharges the output voltage, while controlling the control signal output unit output control
Signal processed is to the receiving terminal control unit, to realize that the receiving terminal control unit is receiving control signal notice institute
It states transmitting terminal control unit and turns off the transmitting terminal.
Preferably, the voltage detection unit includes first voltage detection sub-unit and second voltage detection sub-unit,
In：
The first voltage detection sub-unit includes the first divider resistance and the second divider resistance, first divider resistance
First end connect with the output plus terminal of the receiving terminal, the second end of first divider resistance and second divider resistance
First end connection, common end connect with the vent unit, the second end of second divider resistance and the receiving terminal
Output negative terminal connection；
The second voltage detection sub-unit includes third divider resistance and the 4th divider resistance, the third divider resistance
First end connect with the output plus terminal of the receiving terminal, the second end of the third divider resistance and the 4th divider resistance
First end connection, common end connect with the control signal output unit, the second end of the 4th divider resistance and institute
State the output negative terminal connection of receiving terminal.
Preferably, the vent unit includes controllable switch and bleeder resistance, wherein the control terminal of the controllable switch with
The common end connection of first branch pressure voltage and the connection of the second divider resistance, the first end of the controllable switch and the reception
The output plus terminal at end connects, and the second end of the controllable switch is connect with the first end of the bleeder resistance, the bleeder resistance
Second end connect with the output negative terminal of the receiving terminal, when the output voltage is more than secure threshold, the controllable switch closes
It closes, the bleeder resistance electric discharge.
Preferably, the control signal output unit is comparator, the normal phase input end of the comparator and the third
The anti-phase input of the common end connection of divider resistance and the connection of the 4th divider resistance, the comparator terminates reference voltage, described
The output end of comparator is connect with the receiving terminal control unit, the comparator when the output voltage is more than secure threshold
High level is exported, the receiving terminal control unit notifies the transmitting terminal control unit to turn off the transmitting terminal.
Preferably, the controllable switch is NMOS.
Preferably, the load is battery.
Preferably, after the output voltage is down to the secure threshold, the receiving terminal control unit is additionally operable to judge
Whether meet and the transmitting terminal control unit is notified to control the condition that the transmitting terminal is opened again and then lead to when meeting again
Know that the transmitting terminal control unit controls the transmitting terminal and opens again, otherwise, does not notify the transmitting terminal control unit again
The transmitting terminal is controlled to open；
Wherein, described to control the condition that the transmitting terminal is opened again as the battery fault-free and the battery underfill
Electricity.
In order to solve the above technical problems, the present invention also provides a kind of wireless power supply system, including transmitting terminal, transmitting terminal control
Unit, receiving terminal and receiving terminal control unit processed further include protection circuit as described in any one of the above embodiments.
Preferably, the receiving terminal includes LC series resonant circuits and is connect with the output end of the series resonant circuit
Rectification circuit.
Preferably, the rectification circuit is full bridge rectifier.
The present invention provides a kind of protection circuit and wireless power supply system applied to wireless power supply system, wireless power systems
System includes transmitting terminal, transmitting terminal control unit, receiving terminal and receiving terminal control unit, and receiving terminal is connected with load, protects circuit
It is set between receiving terminal and load, protection circuit includes voltage detection unit, vent unit and control signal output unit, electricity
Pressure detection unit is connect with receiving terminal, vent unit and control signal output unit respectively, and vent unit is also connect with receiving terminal,
Control signal output unit is also connect with receiving terminal control unit；Voltage detection unit is used to detect the output voltage of receiving terminal,
And when output voltage is more than secure threshold, control vent unit discharges to output voltage, while it is single to control control signal output
Member outputs control signals to receiving terminal control unit, to realize that receiving terminal control unit is receiving control signal notice transmitting terminal
Control unit turns off transmitting terminal.
As it can be seen that the present invention is provided with protection circuit between receiving terminal and load, protection circuit can be in the defeated of receiving terminal
On the one hand control vent unit carries out discharge treatment to output voltage when going out voltage more than secure threshold, to reduce the charging of load
Voltage, meanwhile, it also is indirectly controlled transmitting terminal control unit shutdown transmitting terminal by controlling signal output unit, both ensure that and filled
Load is not damaged when load voltage is excessive when electric, while cutting off transmitting terminal power supply and then protecting transmitting terminal circuit, carried
The high security performance of entire wireless power supply system.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of protection circuit applied to wireless power supply system provided by the invention；
The structural schematic diagram of receiving terminal in a kind of wireless power supply system provided by the invention of the positions Fig. 2.
Specific implementation mode
Core of the invention is to provide a kind of protection circuit applied to wireless power supply system, is loaded when both ensure that charging
Load is not damaged when voltage is excessive, while cutting off transmitting terminal power supply and then protecting transmitting terminal circuit, improved entire
The security performance of wireless power supply system；Another core of the present invention is to provide a kind of wireless power system including above-mentioned protection circuit
System.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is please referred to, Fig. 1 is a kind of structural representation of protection circuit applied to wireless power supply system provided by the invention
Figure, the wireless power supply system include transmitting terminal, transmitting terminal control unit, receiving terminal and receiving terminal control unit, receiving terminal with it is negative
Connection is carried, protection circuit is set between receiving terminal and load, and protection circuit includes：
Voltage detection unit 1, vent unit 2 and control signal output unit 3, voltage detection unit 1 respectively with receiving terminal,
Vent unit 2 and control signal output unit 3 connect, and vent unit 2 is also connect with receiving terminal, and control signal output unit 3 is also
It is connect with receiving terminal control unit；
Voltage detection unit 1 is used to detect the output voltage of receiving terminal, and when output voltage is more than secure threshold, control
Vent unit 2 discharges to output voltage, while controlling control signal output unit 3 and outputing control signals to receiving terminal control list
Member, to realize that receiving terminal control unit is receiving control signal notice transmitting terminal control unit shutdown transmitting terminal.
In the application, protection circuit is provided between receiving terminal and load, protection circuit can acquire receiving terminal in real time
Output voltage, when output voltage is not above secure threshold, entire wireless power supply system normal work, when output voltage is more than
When secure threshold, voltage detection unit 1 controls vent unit 2 and discharges output voltage, to reduce the voltage at load both ends, protection
Load, meanwhile, also control control signal output unit 3 outputs control signals to receiving terminal control unit, receiving terminal control unit
Upon the reception of control signals, information exchange is carried out with transmitting terminal control unit, notice transmitting terminal control unit controls transmitting terminal
Shutdown damages to avoid because directly cutting off the load charged caused by transmitting terminal power supply.
In addition, secure threshold here needs to be set accordingly according to the ability to bear loaded, different size
Payload security threshold value is also different, and the present invention is not particularly limited its concrete numerical value.
Specifically, receiving terminal here includes LC series resonant circuits and rectification circuit, and the output of LC series resonant circuits is handed over
Galvanic electricity, rectification circuit carry out rectification to the alternating current and obtain direct current and export to charge for load.Here load can be electricity
Pond, can also be other kinds of load certainly, and the present invention does not limit particularly herein.
Please refer to Fig. 2, the structural schematic diagram of the receiving terminal in a kind of wireless power supply system provided by the invention of the positions Fig. 2.
As a kind of preferred embodiment, voltage detection unit 1 includes first voltage detection sub-unit 11 and second voltage
Detection sub-unit 12, wherein：
First voltage detection sub-unit 11 includes the first divider resistance R1 and the second divider resistance R2, the first divider resistance R1
First end and receiving terminal output plus terminal connect, the first end of the second end of the first divider resistance R1 and the second divider resistance R2
Connection, common end are connect with vent unit 2, and the second end of the second divider resistance R2 and the output negative terminal of receiving terminal connect；
Second voltage detection sub-unit 12 includes third divider resistance R3 and the 4th divider resistance R4, third divider resistance R3
First end and receiving terminal output plus terminal connect, the first end of the second end and the 4th divider resistance R4 of third divider resistance R3
Connection, common end are connect with control signal output unit 3, the second end of the 4th divider resistance R4 and the output negative terminal of receiving terminal
Connection.
It should be noted that in view of vent unit 2 with control signal output unit 3 purpose and operation principle typically each
Difference, vent unit 2 and the circuit structure of control signal output unit 3 are also typically different, in order to avoid using the same voltage
More limiting factor between vent unit 2 caused by detection unit 1 and control signal output unit 3 (such as a because electricity
Press the control signal that detection unit 1 exports that the element for constituting two units is equally caused to be chosen and need special consideration), here
Voltage detection unit 1 includes first voltage detection sub-unit 11 for controlling vent unit 2 and defeated for controlling control signal
Go out the second voltage detection sub-unit 12 of unit 3.Wherein, in first voltage detection sub-unit 11 two resistance value and ratio
Can be different from the value of two resistance in second voltage detection sub-unit 12 and ratio, according to vent unit 2 and control
The particular circuit configurations of signal output unit 3 determine so that vent unit 2 with control signal output unit 3 in structure
And there is larger range of choice in the selection of constituent element.
Specifically, here controls of the common end A of the first divider resistance R1 and the second divider resistance R2 as vent unit 2
Control terminals of the common end B of end processed, third divider resistance R3 and the 4th divider resistance R4 as control signal output unit 3, changes
Different control purposes can be realized in the resistance value and ratio of two resistance in time variant voltage detection sub-unit.
Specifically, the voltage for loading both ends passes through the first divider resistance R1 and the second divider resistance R2 partial pressures, wherein A points
Partial pressure is UA=R2/(R1+R2)*ULoad；The voltage of B points is UB=R4/(R3+R4)*ULoad.It is defeated when receiving terminal in charging process
Go out voltage to increase and then A points is caused to divide UAWhen increasing to certain value (output voltage of receiving terminal is equal to secure threshold at this time),
Vent unit 2 starts, and output voltage is discharged by vent unit 2, meanwhile, B points divide UBCertain value is increased to, control signal is defeated
Go out the work of unit 3, control signal output unit 3 outputs control signals to receiving terminal control unit, to realize that receiving terminal control is single
Member is receiving control signal notice transmitting terminal control unit shutdown transmitting terminal.
As a kind of preferred embodiment, vent unit 2 includes controllable switch Q1 and bleeder resistance Rs, wherein is controllably opened
Close the common end connection that the control terminal of Q1 is connect with the first branch pressure voltage and the second divider resistance R2, the first end of controllable switch Q1
It is connect with the output plus terminal of receiving terminal, the second end of controllable switch Q1 is connect with the first end of bleeder resistance Rs, bleeder resistance Rs
Second end and the output negative terminal of receiving terminal connect, when output voltage is more than secure threshold, controllable switch Q1 is closed, vent discharge
Hinder Rs electric discharges.
Specifically, when wireless power supply system normal work namely output voltage are no more than secure threshold, controllable switch Q1
It is off, bleeder resistance Rs does not work, and when output voltage is more than secure threshold, then controllable switch Q1 can be closed, and be received
The output voltage at end is discharged by bleeder resistance Rs, to realize the reduction of load both end voltage.
As a kind of preferred embodiment, controllable switch Q1 is NMOS.
Specifically, the present invention realizes the electric discharge of the voltage to loading both ends, hardware aspect, A points minute by hardware circuit
Press UAWhen increasing to the driving voltage (output voltage of receiving terminal is equal to secure threshold at this time) of NMOS, NMOS conductings, output electricity
Pressure is discharged by bleeder resistance Rs, reduces the voltage at load both ends with this.After output voltage is discharged by NMOS, load two
The voltage at end reduces, and A points divide UAReduce, until when the voltage of the conducting less than NMOS, load both end voltage is normal, vent discharge
Resistance Rs no longer discharges.
As a kind of preferred embodiment, control signal output unit 3 is comparator, the normal phase input end of comparator and the
The common end of three divider resistance R3 and the 4th divider resistance R4 connections connects, and the anti-phase input of comparator terminates reference voltage, than
Output end compared with device is connect with receiving terminal control unit, and when output voltage is more than secure threshold, comparator exports high level, connects
Receiving end control unit notifies transmitting terminal control unit to turn off transmitting terminal.
Specifically, the application realizes that transmitting terminal disconnects by software, software aspects, the in-phase input end of voltage comparator
B point voltages UBWhen increasing to the reference voltage of inverting input, comparator can export high level to receiving terminal control unit, receive
End control unit can send a signal to transmitting terminal control unit, and then turn off transmitting terminal power supply, and transmitting terminal circuit is protected with this
System.
After voltage is discharged by bleeder resistance Rs, the voltage for loading both ends reduces, and B points divide UBReduce, compares at this time
The output end of device exports low level to receiving terminal control unit, and receiving terminal control unit no longer gives transmitting terminal control unit to send letter
Number.
As a kind of preferred embodiment, after output voltage is down to secure threshold, receiving terminal control unit is additionally operable to sentence
The disconnected condition for notifying transmitting terminal control unit to control transmitting terminal unlatching again again that whether meets then notifies to emit when meeting
End control unit controls transmitting terminal unlatching again, otherwise, transmitting terminal control unit is not notified to control transmitting terminal unlatching again；
Wherein, the condition that control transmitting terminal is opened again is battery fault-free and battery underfill electricity.
In practical applications, the load such as battery in some wireless power supply systems is controlled by receiving terminal control unit
The break-make of battery processed is by the battery management in automobile there is also being used in the wireless power supply system in automobile at some
System controls the break-make of battery.
Based on this, the excessive reason of the voltage at battery both ends may there are many：
1, battery failures；
2, battery management system failure fails to power off in time after battery is fully charged；
3, surge causes.
Therefore, when receiving terminal control unit does not receive the signal of control signal output unit 3, it is also necessary to carry out failure
Diagnosis, then determine whether that retransmit signal recharges to transmitting terminal control unit, sets control transmitting again in the application
The condition that end is opened is battery fault-free and battery underfill electricity.
To sum up, the application is by way of software and hardware combining, the promptness of hardware protection when both ensure that receiving terminal overvoltage,
Self- recoverage may be implemented further through software cooperation.
The present invention provides a kind of protection circuit and wireless power supply system applied to wireless power supply system, wireless power systems
System includes transmitting terminal, transmitting terminal control unit, receiving terminal and receiving terminal control unit, and receiving terminal is connected with load, protects circuit
It is set between receiving terminal and load, protection circuit includes voltage detection unit, vent unit and control signal output unit, electricity
Pressure detection unit is connect with receiving terminal, vent unit and control signal output unit respectively, and vent unit is also connect with receiving terminal,
Control signal output unit is also connect with receiving terminal control unit；Voltage detection unit is used to detect the output voltage of receiving terminal,
And when output voltage is more than secure threshold, control vent unit discharges to output voltage, while it is single to control control signal output
Member outputs control signals to receiving terminal control unit, to realize that receiving terminal control unit is receiving control signal notice transmitting terminal
Control unit turns off transmitting terminal.
As it can be seen that the present invention is provided with protection circuit between receiving terminal and load, protection circuit can be in the defeated of receiving terminal
On the one hand control vent unit carries out discharge treatment to output voltage when going out voltage more than secure threshold, to reduce the charging of load
Voltage, meanwhile, it also is indirectly controlled transmitting terminal control unit shutdown transmitting terminal by controlling signal output unit, both ensure that and filled
Load is not damaged when load voltage is excessive when electric, while cutting off transmitting terminal power supply and then protecting transmitting terminal circuit, carried
The high security performance of entire wireless power supply system.
In order to solve the above technical problems, the present invention also provides a kind of wireless power supply system, including transmitting terminal, transmitting terminal control
Unit, receiving terminal and receiving terminal control unit processed further include the protection circuit such as any of the above-described.
As a kind of preferred embodiment, receiving terminal includes LC series resonant circuits and the output end with series resonant circuit
The rectification circuit of connection.
As a kind of preferred embodiment, rectification circuit is full bridge rectifier.
Certainly, rectification circuit here can also be other kinds of rectification circuit, and the present invention does not limit particularly herein
It is fixed.
Above-described embodiment is please referred to for the introduction of wireless power supply system provided by the invention, the present invention is no longer superfluous herein
It states.
It should be noted that in the present specification, relational terms such as first and second and the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of protection circuit applied to wireless power supply system, the wireless power supply system includes transmitting terminal, transmitting terminal control
Unit, receiving terminal and receiving terminal control unit, the receiving terminal are connected with load, which is characterized in that the protection circuit setting
Between the receiving terminal and the load, the protection circuit includes：
Voltage detection unit, vent unit and control signal output unit, the voltage detection unit respectively with the receiving terminal,
The vent unit and control signal output unit connection, the vent unit are also connect with the receiving terminal, the control
Signal output unit processed is also connect with the receiving terminal control unit；
The voltage detection unit is used to detect the output voltage of the receiving terminal, and when the output voltage is more than secure threshold
When, it controls the vent unit and discharges the output voltage, while controlling the control signal output unit output control letter
Number to the receiving terminal control unit, the hair is notified to realize the receiving terminal control unit receiving the control signal
It penetrates end control unit and turns off the transmitting terminal.
2. protection circuit as described in claim 1, which is characterized in that the voltage detection unit includes first voltage detection
Unit and second voltage detection sub-unit, wherein：
The first voltage detection sub-unit includes the first divider resistance and the second divider resistance, and the of first divider resistance
One end is connect with the output plus terminal of the receiving terminal, and the of the second end of first divider resistance and second divider resistance
One end connects, and common end connect with the vent unit, and the second end of second divider resistance is defeated with the receiving terminal
Go out negative terminal connection；
The second voltage detection sub-unit includes third divider resistance and the 4th divider resistance, and the of the third divider resistance
One end is connect with the output plus terminal of the receiving terminal, and the of the second end of the third divider resistance and the 4th divider resistance
One end connects, and common end is connect with the control signal output unit, and the second end of the 4th divider resistance connects with described
The output negative terminal of receiving end connects.
3. protection circuit as claimed in claim 2, which is characterized in that the vent unit includes controllable switch and vent discharge
Resistance, wherein the common end connection that the control terminal of the controllable switch is connect with first branch pressure voltage and the second divider resistance,
The first end of the controllable switch is connect with the output plus terminal of the receiving terminal, and the second end of the controllable switch is released with described
The first end of resistance connects, and the second end of the bleeder resistance is connect with the output negative terminal of the receiving terminal, when output electricity
Pressure controllable switch closure when being more than secure threshold, the bleeder resistance electric discharge.
4. protection circuit as claimed in claim 3, which is characterized in that the control signal output unit is comparator, described
The common end connection that the normal phase input end of comparator is connect with the third divider resistance and the 4th divider resistance, the comparator
Anti-phase input terminate reference voltage, the output end of the comparator is connect with the receiving terminal control unit, when the output
Voltage comparator output high level when being more than secure threshold, the receiving terminal control unit notify the transmitting terminal control single
Member turns off the transmitting terminal.
5. protection circuit as claimed in claim 3, which is characterized in that the controllable switch is NMOS.
6. protection circuit as described in any one in claim 1-5, which is characterized in that the load is battery.
7. protection circuit as claimed in claim 6, which is characterized in that after the output voltage is down to the secure threshold,
The receiving terminal control unit is additionally operable to judge whether to meet that the transmitting terminal control unit is notified to control the hair again again
The condition that end is opened is penetrated, when meeting, then the transmitting terminal control unit is notified to control the transmitting terminal again and open, otherwise,
The transmitting terminal control unit is not notified to control the transmitting terminal again and open；
Wherein, described to control the condition that the transmitting terminal is opened again as the battery fault-free and battery underfill electricity.
8. a kind of wireless power supply system, including transmitting terminal, transmitting terminal control unit, receiving terminal and receiving terminal control unit, special
Sign is, further includes that claim 1-7 any one of them such as protects circuit.
9. wireless power supply system as claimed in claim 8, which is characterized in that the receiving terminal include LC series resonant circuits and
The rectification circuit being connect with the output end of the series resonant circuit.
10. wireless power supply system as claimed in claim 9, which is characterized in that the rectification circuit is full bridge rectifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710133805.7A CN108574272A (en) | 2017-03-08 | 2017-03-08 | A kind of protection circuit and wireless power supply system applied to wireless power supply system |
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| CN201710133805.7A CN108574272A (en) | 2017-03-08 | 2017-03-08 | A kind of protection circuit and wireless power supply system applied to wireless power supply system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110518563A (en) * | 2019-09-11 | 2019-11-29 | 广东志高暖通设备股份有限公司 | The method and its MCU of overvoltage protection, air-conditioning equipment |
| CN114123381A (en) * | 2021-10-22 | 2022-03-01 | 维沃移动通信有限公司 | Voltage control method, circuit and device of charging device |
| CN115549054A (en) * | 2022-11-28 | 2022-12-30 | 江苏辰特动力有限公司 | Vehicle-mounted voltage abnormity protection circuit and vehicle |
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| CN204441860U (en) * | 2015-03-25 | 2015-07-01 | 佛山市顺德区美的电热电器制造有限公司 | For protective circuit and the wireless power supply of wireless power supply |
| CN204809885U (en) * | 2015-07-02 | 2015-11-25 | 宁波微鹅电子科技有限公司 | Non -contact power transfer device |
| CN204809996U (en) * | 2015-07-02 | 2015-11-25 | 宁波微鹅电子科技有限公司 | Electric energy receiving terminal and non -contact power transfer device |
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| CN110518563A (en) * | 2019-09-11 | 2019-11-29 | 广东志高暖通设备股份有限公司 | The method and its MCU of overvoltage protection, air-conditioning equipment |
| CN110518563B (en) * | 2019-09-11 | 2021-10-22 | 广东志高暖通设备股份有限公司 | Overvoltage protection method, MCU and air conditioning equipment |
| CN114123381A (en) * | 2021-10-22 | 2022-03-01 | 维沃移动通信有限公司 | Voltage control method, circuit and device of charging device |
| CN115549054A (en) * | 2022-11-28 | 2022-12-30 | 江苏辰特动力有限公司 | Vehicle-mounted voltage abnormity protection circuit and vehicle |
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Application publication date: 20180925 |
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